From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steven Johnson To: Fernando Nasser Cc: insight@sources.redhat.com Subject: Re: 2 Segfaults in Insights (Latest CVS) Date: Wed, 11 Oct 2000 15:15:00 -0000 Message-id: <39E4E2CB.886D7D5A@ozemail.com.au> References: <39E418FB.46E1EA66@ozemail.com.au> <39E4925F.A5339AA@cygnus.com> X-SW-Source: 2000-q4/msg00068.html Fernando Nasser wrote: > > Steve, > > We have a bug tracking database on the Insight web page > http://sources.redhat.com/insight Just did that. :) > I would need to see this stack trace. Can you post it please? > Here tis. GNU gdb 19991116 Copyright 1998 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "i586-mandrake-linux". Program received signal SIGSEGV, Segmentation fault. 0x4018915c in memcpy () from /lib/libc.so.6 #0 0x4018915c in memcpy () from /lib/libc.so.6 #1 0x891b4f8 in ?? () #2 0x80a5372 in value_assign (toval=0x891b4f8, fromval=0x89bdc50) at ../../src/gdb/valops.c:811 #3 0x80a275a in evaluate_subexp_standard (expect_type=0x0, exp=0x89b8d90, pos=0xbfffc658, noside=EVAL_NORMAL) at ../../src/gdb/eval.c:1150 #4 0x80a053f in evaluate_subexp (expect_type=0x0, exp=0x89b8d90, pos=0xbfffc658, noside=EVAL_NORMAL) at ../../src/gdb/eval.c:71 #5 0x80a06c6 in evaluate_expression (exp=0x89b8d90) at ../../src/gdb/eval.c:145 #6 0x80ae8dc in set_command (exp=0x89dd87c "$ictrl=0x7", from_tty=0) at ../../src/gdb/printcmd.c:1041 #7 0x80e2c9a in gdbtk_call_command (cmdblk=0x84ce898, arg=0x89dd87c "$ictrl=0x7", from_tty=0) at ../../src/gdb/gdbtk/generic/gdbtk-hooks.c:519 #8 0x80fec23 in execute_command (p=0x89dd885 "7", from_tty=0) at ../../src/gdb/top.c:1521 #9 0x80fe3a5 in execute_control_command (cmd=0x8541188) at ../../src/gdb/top.c:1085 #10 0x80fe9af in execute_user_command (c=0x84c9300, args=0x0) at ../../src/gdb/top.c:1437 #11 0x80febcf in execute_command (p=0x89d5e0b "", from_tty=0) at ../../src/gdb/top.c:1515 #12 0x80fe3a5 in execute_control_command (cmd=0x8694710) at ../../src/gdb/top.c:1085 #13 0x80fe9af in execute_user_command (c=0x85cb398, args=0x0) at ../../src/gdb/top.c:1437 #14 0x80feba0 in execute_command (p=0x89afc3a "e", from_tty=0) at ../../src/gdb/top.c:1507 #15 0x80dd931 in gdb_cmd (clientData=0x80dd850, interp=0x84e06c0, objc=2, objv=0x84e136c) at ../../src/gdb/gdbtk/generic/gdbtk-cmds.c:830 #16 0x80dd593 in wrapped_call (opaque_args=0xbfffc9c8) at ../../src/gdb/gdbtk/generic/gdbtk-cmds.c:536 #17 0x80fddfc in catch_errors (func=0x80dd578 , args=0xbfffc9c8, errstring=0x83c34c3 "", mask=6) at ../../src/gdb/top.c:607 #18 0x80dd4b6 in call_wrapper (clientData=0x80dd850, interp=0x84e06c0, objc=2, objv=0x84e136c) at ../../src/gdb/gdbtk/generic/gdbtk-cmds.c:474 #19 0x837847a in TclExecuteByteCode (interp=0x84e06c0, codePtr=0x89afee0) at ../../../src/tcl/unix/../generic/tclExecute.c:955 #20 0x835f2a0 in Tcl_EvalObj (interp=0x84e06c0, objPtr=0x85ed220) at ../../../src/tcl/unix/../generic/tclBasic.c:2645 #21 0x82c8290 in Itcl_EvalMemberCode (interp=0x84e06c0, mfunc=0x89891a8, member=0x89891c0, contextObj=0x0, objc=1, objv=0x84e1368) at /home/steven/dev/tools/gdb/src/itcl/itcl/generic/itcl_methods.c:1029 #22 0x82c8c6f in Itcl_ExecProc (clientData=0x89891a8, interp=0x84e06c0, objc=1, objv=0x84e1368) at /home/steven/dev/tools/gdb/src/itcl/itcl/generic/itcl_methods.c:1605 #23 0x837847a in TclExecuteByteCode (interp=0x84e06c0, codePtr=0x89b54f8) at ../../../src/tcl/unix/../generic/tclExecute.c:955 #24 0x835f2a0 in Tcl_EvalObj (interp=0x84e06c0, objPtr=0x898d850) at ../../../src/tcl/unix/../generic/tclBasic.c:2645 #25 0x8395b1c in Tcl_UplevelObjCmd (dummy=0x0, interp=0x84e06c0, objc=3, objv=0x84e135c) at ../../../src/tcl/unix/../generic/tclProc.c:609 #26 0x837847a in TclExecuteByteCode (interp=0x84e06c0, codePtr=0x8530d68) at ../../../src/tcl/unix/../generic/tclExecute.c:955 #27 0x835f2a0 in Tcl_EvalObj (interp=0x84e06c0, objPtr=0x84f9de0) at ../../../src/tcl/unix/../generic/tclBasic.c:2645 #28 0x839605a in TclObjInterpProc (clientData=0x85046d0, interp=0x84e06c0, objc=2, objv=0x84e1354) at ../../../src/tcl/unix/../generic/tclProc.c:996 #29 0x837847a in TclExecuteByteCode (interp=0x84e06c0, codePtr=0x8991f18) at ../../../src/tcl/unix/../generic/tclExecute.c:955 #30 0x835f2a0 in Tcl_EvalObj (interp=0x84e06c0, objPtr=0x868f2a8) at ../../../src/tcl/unix/../generic/tclBasic.c:2645 #31 0x835f06b in Tcl_Eval (interp=0x84e06c0, string=0xbfffe024 "Download::download_it") at ../../../src/tcl/unix/../generic/tclBasic.c:2453 #32 0x83607fa in Tcl_GlobalEval (interp=0x84e06c0, command=0xbfffe024 "Download::download_it") at ../../../src/tcl/unix/../generic/tclBasic.c:3983 #33 0x8350700 in TkCopyAndGlobalEval (interp=0x84e06c0, script=0x8871ef8 "Download::download_it") at ../../../src/tk/unix/../generic/tkBind.c:4547 #34 0x831c76f in TkInvokeMenu (interp=0x84e06c0, menuPtr=0x886aa68, index=1) at ../../../src/tk/unix/../generic/tkMenu.c:922 #35 0x831c2b1 in MenuWidgetCmd (clientData=0x886aa68, interp=0x84e06c0, argc=3, argv=0xbfffe27c) at ../../../src/tk/unix/../generic/tkMenu.c:749 #36 0x835e995 in TclInvokeStringCommand (clientData=0x886d868, interp=0x84e06c0, objc=3, objv=0x84e1348) at ../../../src/tcl/unix/../generic/tclBasic.c:1745 #37 0x837847a in TclExecuteByteCode (interp=0x84e06c0, codePtr=0x89c2438) at ../../../src/tcl/unix/../generic/tclExecute.c:955 #38 0x835f2a0 in Tcl_EvalObj (interp=0x84e06c0, objPtr=0x89e2040) at ../../../src/tcl/unix/../generic/tclBasic.c:2645 #39 0x8395b1c in Tcl_UplevelObjCmd (dummy=0x0, interp=0x84e06c0, objc=3, objv=0x84e133c) at ../../../src/tcl/unix/../generic/tclProc.c:609 #40 0x837847a in TclExecuteByteCode (interp=0x84e06c0, codePtr=0x89939f0) at ../../../src/tcl/unix/../generic/tclExecute.c:955 #41 0x835f2a0 in Tcl_EvalObj (interp=0x84e06c0, objPtr=0x8506ec8) at ../../../src/tcl/unix/../generic/tclBasic.c:2645 #42 0x839605a in TclObjInterpProc (clientData=0x851bd70, interp=0x84e06c0, objc=3, objv=0x84e1330) at ../../../src/tcl/unix/../generic/tclProc.c:996 #43 0x837847a in TclExecuteByteCode (interp=0x84e06c0, codePtr=0x899b5d8) at ../../../src/tcl/unix/../generic/tclExecute.c:955 #44 0x835f2a0 in Tcl_EvalObj (interp=0x84e06c0, objPtr=0x85c4858) at ../../../src/tcl/unix/../generic/tclBasic.c:2645 #45 0x835f06b in Tcl_Eval (interp=0x84e06c0, string=0x8991fa8 "\n tkMenuInvoke .srcwin0.#srcwin0#srcwin#container#pane0#childsite#con#m.#srcwin0#srcwin#container#pane0#childsite#con#m#run 1\n") at ../../../src/tcl/unix/../generic/tclBasic.c:2453 #46 0x83607fa in Tcl_GlobalEval (interp=0x84e06c0, command=0x8991fa8 "\n tkMenuInvoke .srcwin0.#srcwin0#srcwin#container#pane0#childsite#con#m.#srcwin0#srcwin#container#pane0#childsite#con#m#run 1\n") at ../../../src/tcl/unix/../generic/tclBasic.c:3983 #47 0x834d730 in Tk_BindEvent (bindingTable=0x84f4a38, eventPtr=0x89c6a40, tkwin=0x886a898, numObjects=0, objectPtr=0xbffff49c) at ../../../src/tk/unix/../generic/tkBind.c:1731 #48 0x835137a in TkBindEventProc (winPtr=0x886a898, eventPtr=0x89c6a40) at ../../../src/tk/unix/../generic/tkCmds.c:242 #49 0x82fe5e0 in Tk_HandleEvent (eventPtr=0x89c6a40) at ../../../src/tk/unix/../generic/tkEvent.c:657 #50 0x82fe8aa in WindowEventProc (evPtr=0x89c6a38, flags=-3) at ../../../src/tk/unix/../generic/tkEvent.c:983 #51 0x838fdf7 in Tcl_ServiceEvent (flags=-3) at ../../../src/tcl/unix/../generic/tclNotify.c:444 #52 0x83900d1 in Tcl_DoOneEvent (flags=0) at ../../../src/tcl/unix/../generic/tclNotify.c:683 #53 0x82fe912 in Tk_MainLoop () at ../../../src/tk/unix/../generic/tkEvent.c:1041 #54 0x80e2a66 in tk_command_loop () at ../../src/gdb/gdbtk/generic/gdbtk-hooks.c:383 #55 0x809ba68 in captured_command_loop (data=0x0) at ../../src/gdb/main.c:104 #56 0x80fddfc in catch_errors (func=0x809ba50 , args=0x0, errstring=0x83a3c62 "", mask=6) at ../../src/gdb/top.c:607 #57 0x809c523 in captured_main (data=0xbffff914) at ../../src/gdb/main.c:749 #58 0x80fddfc in catch_errors (func=0x809ba9c , args=0xbffff914, errstring=0x83a3c62 "", mask=6) at ../../src/gdb/top.c:607 #59 0x809c54f in main (argc=2, argv=0xbffff984) at ../../src/gdb/main.c:761 > > > Your are being too optimistic :-) Insight is not that aware of things that are > done in the simulated console or even in the scripts (as they are still gdb scripts, > not insight scripts as we may have in the future). > I appreciate this, what I believed was happening is Insight itself would "set" when it wanted to update something. And that the hook was for the purpose of a general catch all of Insights "set" operations. (im sure i saw a comment to this effect somewhere) Insight definately calls the set_command operation, and is executing it "After" the set command has been successfully performed on the target. If I comment out the body of set_command, problem goes away. But im not sure what else i am breaking. The normal do_setshow_command operation does not appear to call set_command. What is set_command in printcmd.c actually providing?? > But I would need to look at that stack and at the contents of the cmd_list_struct > that is passed back by gdb to the GUI in the hook callback. > How do I get this for you? (What commands.) Is there a way of getting GDB (Normal command line) to log its session? I can't find it if there is. Steven Johnson